The McDonald’s double cheeseburger has been described as "the cheapest, most nutritious and bountiful food that has ever existed in human history". With the help of a nutritionist, Daniel Johnson gives you 10 traditionally ‘unhealthy’ foods which may be better for you than you think Fish and chips Heavily doused in salt and vinegar, a portion of fish and chips is rarely thought of as a good, nutritious meal. And although it is very high in calories and fat, the fish itself is very nutritious.